High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)

Autores
Mola, Liliana Maria; Fourastié, María Florencia; Agopian, Silvia Susana
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina. Chromosome studies performed on this genus showed a wide variation in chromosome number and a high frequency of the neoXY chromosomal sex-determination system, although the sexual pair was not observed in all cases. This work analyzes the spermatogenesis of Orthemis discolor (Burmeister, 1839), O. nodiplaga Karsch, 1891 and O. ambinigra Calvert, 1909 in individuals from the provinces of Misiones and Buenos Aires, Argentina. Orthemis discolor has 2n=23, n=11+X and one larger bivalent. Orthemis nodiplaga exhibits the largest chromosome number of the order, 2n=41, n=20+X and small chromosomes. Orthemis ambinigra shows a reduced complement, 2n=12, n=5+neo-XY, large-sized chromosomes, and a homomorphic sex bivalent. Fusions and fragmentations are the main evolutionary mechanisms in Odonata, as well as in other organisms with holokinetic chromosomes. Orthemis nodiplaga would have originated by nine autosomal fragmentations from the ancestral karyotype of the genus (2n=22A+X in males). We argue that the diploid number 23 in Orthemis has a secondary origin from the ancestral karyotype of family Libellulidae (2n=25). The complement of O. ambinigra would have arisen from five autosomal fusions and the insertion of the X chromosome into a fused autosome. C-banding and DAPI/CMA3 staining allowed the identification of the sexual bivalent, which revealed the presence of constitutive heterochromatin. We propose that the chromosome with intermediate C-staining intensity and three medial heterochromatic regions corresponds to the neo-Y and that the neo-system of this species has an ancient evolutionary origin. Moreover, we discuss on the mechanisms involved in the karyotypic evolution of this genus, the characteristics of the neo sex-determining systems and the patterns of heterochromatin distribution, quantity and base pair richness.
Fil: Mola, Liliana Maria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fourastié, María Florencia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Agopian, Silvia Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina
Materia
CHROMOSOMAL EVOLUTION
HETEROCHROMATIN CHARACTERIZATION
HOLOKINETIC CHROMOSOMES
SEX-DETERMINATION SYSTEM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/182094
Acceder
id CONICETDig_a9eb330c47682afb54e5b4483a6ee30d
oai_identifier_str oai:ri.conicet.gov.ar:11336/182094
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)Mola, Liliana MariaFourastié, María FlorenciaAgopian, Silvia SusanaCHROMOSOMAL EVOLUTIONHETEROCHROMATIN CHARACTERIZATIONHOLOKINETIC CHROMOSOMESSEX-DETERMINATION SYSTEMhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina. Chromosome studies performed on this genus showed a wide variation in chromosome number and a high frequency of the neoXY chromosomal sex-determination system, although the sexual pair was not observed in all cases. This work analyzes the spermatogenesis of Orthemis discolor (Burmeister, 1839), O. nodiplaga Karsch, 1891 and O. ambinigra Calvert, 1909 in individuals from the provinces of Misiones and Buenos Aires, Argentina. Orthemis discolor has 2n=23, n=11+X and one larger bivalent. Orthemis nodiplaga exhibits the largest chromosome number of the order, 2n=41, n=20+X and small chromosomes. Orthemis ambinigra shows a reduced complement, 2n=12, n=5+neo-XY, large-sized chromosomes, and a homomorphic sex bivalent. Fusions and fragmentations are the main evolutionary mechanisms in Odonata, as well as in other organisms with holokinetic chromosomes. Orthemis nodiplaga would have originated by nine autosomal fragmentations from the ancestral karyotype of the genus (2n=22A+X in males). We argue that the diploid number 23 in Orthemis has a secondary origin from the ancestral karyotype of family Libellulidae (2n=25). The complement of O. ambinigra would have arisen from five autosomal fusions and the insertion of the X chromosome into a fused autosome. C-banding and DAPI/CMA3 staining allowed the identification of the sexual bivalent, which revealed the presence of constitutive heterochromatin. We propose that the chromosome with intermediate C-staining intensity and three medial heterochromatic regions corresponds to the neo-Y and that the neo-system of this species has an ancient evolutionary origin. Moreover, we discuss on the mechanisms involved in the karyotypic evolution of this genus, the characteristics of the neo sex-determining systems and the patterns of heterochromatin distribution, quantity and base pair richness.Fil: Mola, Liliana Maria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fourastié, María Florencia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Agopian, Silvia Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; ArgentinaZoological Institute2021-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/182094Mola, Liliana Maria; Fourastié, María Florencia; Agopian, Silvia Susana; High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata); Zoological Institute; Comparative Cytogenetics; 15; 4; 5-2021; 355-3741993-07711993-078XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3897/compcytogen.v15.i4.68761info:eu-repo/semantics/altIdentifier/url/https://compcytogen.pensoft.net/article/68761/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:35:16Zoai:ri.conicet.gov.ar:11336/182094instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:35:16.938CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
title High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
spellingShingle High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
Mola, Liliana Maria
CHROMOSOMAL EVOLUTION
HETEROCHROMATIN CHARACTERIZATION
HOLOKINETIC CHROMOSOMES
SEX-DETERMINATION SYSTEM
title_short High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
title_full High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
title_fullStr High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
title_full_unstemmed High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
title_sort High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata)
dc.creator.none.fl_str_mv Mola, Liliana Maria
Fourastié, María Florencia
Agopian, Silvia Susana
author Mola, Liliana Maria
author_facet Mola, Liliana Maria
Fourastié, María Florencia
Agopian, Silvia Susana
author_role author
author2 Fourastié, María Florencia
Agopian, Silvia Susana
author2_role author
author
dc.subject.none.fl_str_mv CHROMOSOMAL EVOLUTION
HETEROCHROMATIN CHARACTERIZATION
HOLOKINETIC CHROMOSOMES
SEX-DETERMINATION SYSTEM
topic CHROMOSOMAL EVOLUTION
HETEROCHROMATIN CHARACTERIZATION
HOLOKINETIC CHROMOSOMES
SEX-DETERMINATION SYSTEM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina. Chromosome studies performed on this genus showed a wide variation in chromosome number and a high frequency of the neoXY chromosomal sex-determination system, although the sexual pair was not observed in all cases. This work analyzes the spermatogenesis of Orthemis discolor (Burmeister, 1839), O. nodiplaga Karsch, 1891 and O. ambinigra Calvert, 1909 in individuals from the provinces of Misiones and Buenos Aires, Argentina. Orthemis discolor has 2n=23, n=11+X and one larger bivalent. Orthemis nodiplaga exhibits the largest chromosome number of the order, 2n=41, n=20+X and small chromosomes. Orthemis ambinigra shows a reduced complement, 2n=12, n=5+neo-XY, large-sized chromosomes, and a homomorphic sex bivalent. Fusions and fragmentations are the main evolutionary mechanisms in Odonata, as well as in other organisms with holokinetic chromosomes. Orthemis nodiplaga would have originated by nine autosomal fragmentations from the ancestral karyotype of the genus (2n=22A+X in males). We argue that the diploid number 23 in Orthemis has a secondary origin from the ancestral karyotype of family Libellulidae (2n=25). The complement of O. ambinigra would have arisen from five autosomal fusions and the insertion of the X chromosome into a fused autosome. C-banding and DAPI/CMA3 staining allowed the identification of the sexual bivalent, which revealed the presence of constitutive heterochromatin. We propose that the chromosome with intermediate C-staining intensity and three medial heterochromatic regions corresponds to the neo-Y and that the neo-system of this species has an ancient evolutionary origin. Moreover, we discuss on the mechanisms involved in the karyotypic evolution of this genus, the characteristics of the neo sex-determining systems and the patterns of heterochromatin distribution, quantity and base pair richness.
Fil: Mola, Liliana Maria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fourastié, María Florencia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Agopian, Silvia Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina
description The American dragonfly genus Orthemis Hagen, 1861 is mainly found in the Neotropical region. Seven of 28 taxonomically described species have been reported from Argentina. Chromosome studies performed on this genus showed a wide variation in chromosome number and a high frequency of the neoXY chromosomal sex-determination system, although the sexual pair was not observed in all cases. This work analyzes the spermatogenesis of Orthemis discolor (Burmeister, 1839), O. nodiplaga Karsch, 1891 and O. ambinigra Calvert, 1909 in individuals from the provinces of Misiones and Buenos Aires, Argentina. Orthemis discolor has 2n=23, n=11+X and one larger bivalent. Orthemis nodiplaga exhibits the largest chromosome number of the order, 2n=41, n=20+X and small chromosomes. Orthemis ambinigra shows a reduced complement, 2n=12, n=5+neo-XY, large-sized chromosomes, and a homomorphic sex bivalent. Fusions and fragmentations are the main evolutionary mechanisms in Odonata, as well as in other organisms with holokinetic chromosomes. Orthemis nodiplaga would have originated by nine autosomal fragmentations from the ancestral karyotype of the genus (2n=22A+X in males). We argue that the diploid number 23 in Orthemis has a secondary origin from the ancestral karyotype of family Libellulidae (2n=25). The complement of O. ambinigra would have arisen from five autosomal fusions and the insertion of the X chromosome into a fused autosome. C-banding and DAPI/CMA3 staining allowed the identification of the sexual bivalent, which revealed the presence of constitutive heterochromatin. We propose that the chromosome with intermediate C-staining intensity and three medial heterochromatic regions corresponds to the neo-Y and that the neo-system of this species has an ancient evolutionary origin. Moreover, we discuss on the mechanisms involved in the karyotypic evolution of this genus, the characteristics of the neo sex-determining systems and the patterns of heterochromatin distribution, quantity and base pair richness.
publishDate 2021
dc.date.none.fl_str_mv 2021-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/182094
Mola, Liliana Maria; Fourastié, María Florencia; Agopian, Silvia Susana; High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata); Zoological Institute; Comparative Cytogenetics; 15; 4; 5-2021; 355-374
1993-0771
1993-078X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/182094
identifier_str_mv Mola, Liliana Maria; Fourastié, María Florencia; Agopian, Silvia Susana; High karyotypic variation in Orthemis Hagen, 1861 species, with insights about the neo-XY in Orthemis ambinigra Calvert, 1909 (Libellulidae, Odonata); Zoological Institute; Comparative Cytogenetics; 15; 4; 5-2021; 355-374
1993-0771
1993-078X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3897/compcytogen.v15.i4.68761
info:eu-repo/semantics/altIdentifier/url/https://compcytogen.pensoft.net/article/68761/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Zoological Institute
publisher.none.fl_str_mv Zoological Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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